Aeration device for internal-combustion engines



May 27, w30. A R. NAcKr-:T 1,760,315

AERATION DEVICE FOR INTERNAL COMBUSTION ENGINES FiledflJulyrls, 1927 Patented May 27, 1930 UNITED STATES RICHARD NACKET, OF VANCOUVER, BRITISH COLUMBIA, CANADA AERATION DEVICE FOR INTERNAL-COMBUSTION ENGINES Application led July 13,

This invention relates to aeration devices for internal combustion engines. Its object is to provide a simple and inexpensive method, whereby air may be admitted to the intake manifold according to requirement and entirely without personal attention.

I am aware that various devices have been employed to provide air-dilution of the gaseous mixture during certain conditions of performance as it is well known that such dilution aids economy of fuel when properly adjusted to conditions.

All such devices, however, are faulty in various degrees inasmuch as they are usually either set for a constant condition, or require mechanical devices which are subject to wear' or repeated adjustment, hence they are quickly discarded.

My device is extremely simple consisting of three elements only, viz.: an air tube or hollow plug screw-threaded to engage a corresponding aperture in the manifold, preferably just above the carburetter and between it and the intake of the cylinders to the inner extremity of the screw-threaded hollow plug is secured firmly a helical spring having its convolutions wound tightly against each other so as to form an air-tight tube. The inner extremity of the tube formed by the helix is closed by a disc to which are secured fins. These are the three before mentioned parts, the tubular plug, the spring coil, the end closure.

The invention is clearly shown in the drawings herewith, Fig. l being a longitudinal section and Fig. 2, a side elevation at right angles to Fig. l.

The air tube or hollow plug is indicated at l and has small apertures 4 exposed to the atmosphere. This is screw-threaded at 5 to engage a corresponding screw-thread in the manifold 8. A hexagonal projection 9 is provided for convenience of attachment.

At the inner extremity of the hollow plug is firmly secured a helical coil of resilient wire 2, the convolutions being tightly wound against each other so as to form an air-tight tube, the extremity of which is closed air- 50 tight by a disc attached to fins 3 by which the 1927. Serial No. 205,453.

surface of that portion of the device within the manifold is increased in area.

rlhe device operates in this way, so longas the helical coil is not deflected side-wise. There is no air admission to the manifold through it, but immediatelythe stream of gaseous mixture indicated at 7 has attained suficient velocity to deflect the coil, as indiv cated in Fig. 2, atmospheric air is drawn in through the expanded convolutions, as shown at 6, and takes the direction shown by the curved arrows, so intermixing with the gas mixture and diluting it in proportion to` the strength of the in-draft.

Having now fully described my invention, I declare that what I claim as new and desire to be protected in by Letters Patent, is:

An aeration device for diluting the intake manifold gases of an internal combustion engine comprising, a hollow screw-threaded plug adapted to engage a. corresponding screw-threaded aperture in an intake manifold, a tightly wound helix of resilient wire forming a fiexible tube secured air-tight to the inner extremity of said hollow plug, the outward extremity of the said flexible tube being closed air-tight, fins secured to the closed extremity of said helix, said fins being adapted to resist the gaseous flow in said manifold, and the said helix being so wound that its adjacent convolutions are air-tight except when said helix is deflected from axial alignment with the said hollow plug by the gaseous flow in the said manifold.

In testimony whereof I aiix my signature.

RICHARD NACKET.

CTI 

